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BRITISH STANDARD Grouts for tiles Part 1: Determination of chemical resistance of reaction resin mortars ICS 83.180; 91.100.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12808-1:2008 BS EN 12808-1:2008 National foreword This British Standard is the UK implementation of EN 12808-1:2008 It supersedes BS EN 12808-1:1999 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee B/539, Ceramic tiles and other rigid tiling A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2008 © BSI 2008 ISBN 978 580 63511 Amendments/corrigenda issued since publication Date Comments BS EN 12808-1:2008 EUROPEAN STANDARD EN 12808-1 NORME EUROPÉENNE EUROPÄISCHE NORM October 2008 ICS 83.180; 91.100.10 Supersedes EN 12808-1:1999 English Version Grouts for tiles - Part 1: Determination of chemical resistance of reaction resin mortars Mortiers de joints pour carrelage - Partie 1: Détermination de la résistance chimique des mortiers base de résines réactives Mörtel und Klebstoffe für Fliesen und Platten - Teil 1: Bestimmung der Chemikalienbeständigkeit von Reaktionsharzmörteln This European Standard was approved by CEN on 29 August 2008 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members B-1050 Brussels Ref No EN 12808-1:2008: E BS EN 12808-1:2008 EN 12808-1:2008 (E) Contents Page Foreword Scope Normative references Sampling .4 Test conditions Test materials .4 6.1 6.2 6.3 6.4 Apparatus .5 Mould Containers Compression machine Chemical agent 7.1 7.2 7.3 7.4 Test specimen Number Dimension .6 Preparation .6 Conditioning Procedure .6 9.1 9.2 9.3 Evaluation and expression of results Mass change Diameter change Change of compressive strength value 10 Test report BS EN 12808-1:2008 EN 12808-1:2008 (E) Foreword This document (EN 12808-1:2008) has been prepared by Technical Committee CEN/TC 67 “Ceramic tiles”, the secretariat of which is held by UNI This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2009, and conflicting national standards shall be withdrawn at the latest by April 2009 This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s) Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights This document supersedes EN 12808-1:1999 This document is one of a series of European Standards for ceramic tile adhesives including: EN 1308, Adhesives for tiles - Determination of slip EN 1323, Adhesives for tiles - Concrete slabs for tests EN 1324, Adhesives for tiles - Determination of shear adhesion strength of dispersion adhesives EN 1346, Adhesives for tiles - Determination of open time EN 1347, Adhesives for tiles - Determination of wetting capability EN 1348, Adhesives for tiles - Determination of tensile adhesion strength for cementitious adhesives EN 12002, Adhesives for tiles - Determination of transverse deformation for cementitious adhesives and grouts EN 12003, Adhesive for tiles - Determination of shear adhesion strength of reaction resin adhesives EN 12004, Adhesives for tiles – Requirements, evaluation of conformity, classification and designation EN 12808-1, Grouts for tiles – Part 1: Determination of chemical resistance of reaction resin mortars EN 12808-2, Grouts for tiles – Part 2: Determination of resistance to abrasion EN 12808-3, Grouts for tiles – Part 3: Determination of flexural and compressive strength EN 12808-4, Grouts for tiles – Part 4: Determination of shrinkage EN 12808-5, Grouts for tiles – Part 5: Determination of water absorption According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom BS EN 12808-1:2008 EN 12808-1:2008 (E) Scope This European Standard specifies the test method to be used to determine the chemical resistance of ceramic tile adhesives and grouts under anticipated service conditions This European Standard applies to reaction resin ceramic tile grouts and adhesives for internal and external ceramic tile installations on walls and floors This European Standard does not contain performance requirements or recommendations for the design and installation of ceramic tiles and grouts NOTE Ceramic tile adhesives and grouts can be used also for other kinds of tiles (natural and agglomerated stones, etc.), where these not adversely affect the materials WARNING - This European Standard can involve hazardous materials and operations Persons using this standard should be familiar with normal laboratory practice This European Standard does not purport to address all the safety problems, if any, associated with its use It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any European and national regulatory conditions Normative references The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies EN 1067, Adhesives - Examination and preparation of samples for testing EN ISO 15605, Adhesives – Sampling (ISO 15605:2000) Sampling Take a test sample of at least kg of the adhesive or grout in accordance with EN ISO 15605 and EN 1067 Test conditions Standard conditions shall be (23 ± 2) °C and (50 ± 5) % relative humidity and a speed of air in the testing area less than 0,2 m/s Test materials Condition all test materials other than the adhesive to be tested for at least 24 h under standard conditions The adhesive to be tested shall be within its shelf life, where this is specified BS EN 12808-1:2008 EN 12808-1:2008 (E) 6.1 Apparatus Mould The mould shall be a right cylinder (25 ± 1) mm in diameter by (25 ± 1) mm high The mould shall be constructed in any manner that allows the formation of the desired test specimen Typical moulds consist of a (25 ± 1) mm thick flat plastic board in which (25 ± 1) mm diameter holes have been cut, and to the bottom of which a flat and smooth plastic sheet, at least mm thick, without holes, which is attached by means of screws or any other suitable system Alternatively, the moulds shall consist of sections of round plastic tubing or pipe, (25 ± 1) mm in inside diameter, and (25 ± 1) mm long, with sufficient wall thickness to be rigid and retain dimensional stability during the moulding operation, and a mm thick flat plastic sheet on which one open end of each section shall be able to be rested NOTE The material from which the mould is constructed should be chemically inert and have antistick properties Polyethylene, polypropylene, polytetrafluoroethylene and metal forms having a sintered coating of tetrafluoroethylene polymer have been found satisfactory 6.2 Containers 6.2.1 Wide mouth jars of sufficient capacity, fitted with plastic or plastic-lined metal screw caps for low temperatures tests involving media of low volatility 6.2.2 Erlenmeyer flasks, of sufficient capacity, fitted with standard-taper-joints and a reflux condenser attachment for use with volatile media 6.2.3 Containers, as described in 6.2.1 and 6.2.2, of a suitable inert material for use with media which attack glass 6.3 Compression machine A test machine with suitable capacity and sensitivity for the test and with a variable testing speed The machine shall be capable of applying the compression load to the specimen through a suitable compression jig designed to provide self-alignment with specimen 6.4 Chemical agent The chemical agent shall consist of the media to which the chemical resistant materials are to be exposed in service 7.1 Test specimen Number The number of specimen required is dependent upon the number of test media to be employed, the number of different temperatures at which testing is performed and the frequency of test intervals In any case the test specimen shall consist of sets of a minimum of three cylinders for one medium, at a single temperature and for each test interval In addition one set of at least three specimens shall be available for test immediately following the conditioning period, and other sets of at least three, equivalent to the number of test temperatures, for the total test period Calculate the total number of specimen required as follows: N = n (M ⋅ T ⋅ I ) + n ⋅ T + n (1) BS EN 12808-1:2008 EN 12808-1:2008 (E) where: N is the number of specimen; n is the number of specimen for a single test; M is the number of media; T is the number of test temperatures; I is the number of test intervals 7.2 Dimension The test units shall be cast right cylinders, (25 ± 1) mm in diameter by (25 ± 1) mm high, with flat smooth faces normal to the axis of the cylinder, prepared in moulds described in 6.1 and employing no release agent in the mould 7.3 Preparation Mix the components in the ratio specified by the manufacturer’s instructions Blend the parts using a suitable hand tool or machine mixer, ensuring that any ingredients are thoroughly and uniformly mixed Place the product in the mould with a spatula, taking care to ensure complete filling of the mould cavity without entrapment of air Scrape off the excess material with a flat trowel, making the exposed surface as smooth and even as possible Permit the material to remain in the mould until it has set sufficiently to allow removal without danger of deformation or breakage 7.4 Conditioning Condition the test units for days in standard conditions, days includes the mixing time in the mould After the days, proceed as described in 8.5 on one set of specimens Procedure 8.1 Immediately following the conditioning period measure the diameter of all test specimens to the nearest 0,03 mm using a micrometer Make two measurements at right angles to each other and record the diameter as the average of the two Following the diameter measurement weigh all the specimen to the nearest 0,001 g on an analytical balance and record the values Prior to immersion record a brief description of the colour and surface appearance of the specimen and of colour and transparency of the test medium 8.2 Place the weighed specimen, to be immersed, on their curved sides into the container (6.2) taking care to prevent the cylinder faces coming in contact with each other The total number of specimen per container is only limited by the ability of the container to hold the specimen plus the required amount of test medium per specimen 8.3 Add (100 ± 5) ml of the chemical agent for each specimen and place the closed container in a constanttemperature oven adjusted to the required temperature or in a suitably adjusted liquid bath simulating the actual service and exposure as closely as possible Replace agents that are known to be unstable, as often as necessary, in order to maintain the original chemical composition and concentration, for the planned intervals 8.4 Remove the specimen after 28 days of immersion to determine the chemical attack If necessary, employ other exposure periods BS EN 12808-1:2008 EN 12808-1:2008 (E) Clean the specimen with three quick rinses in cold running tap water and quick dry by blotting with a paper towel between each rinse After the final blotting allow the specimen to dry for 30 min, resting on its curved surface, weigh to the nearest 0,001 g and measure the diameter of the test specimen as described in 8.1 Note any indication of surface attack on the specimen, any discoloration of the test specimen and the formation of any sediment 8.5 Determine the compressive strength for one set of specimens: immediately after the conditioning period; after the exposure period for each chemical agent and each temperature; after ageing in air for the total test period at each test temperature The elapsed time between the removal of the specimen from the test medium and the compressive test should be uniform for all specimens Place each specimen in the testing machine with the plane faces of the cylinder in contact with the surface of the compression tool or cage Apply the load to the specimen at a crosshead movement of (5,5 ± 0,5) mm/min when the machine is running without load Break the specimen and record the maximum load 9.1 Evaluation and expression of results Mass change Calculate to the nearest 0,01 % the percentage loss or gain in mass of the specimen during exposure for each examination period as follows: ∆W = [(W − C ) / C ] ⋅ 100 (2) where: ∆W is the mass change expressed in percentage; W is the mass of the specimen after immersion, in grams; C is the mass of the specimen after initial conditioning, in grams Determine the mean of the three values or more A result showing a plus (+) sign shall indicate a gain in mass and a minus (-) sign shall indicate a loss 9.2 Diameter change Calculate to the nearest 0,01 % the percentage change of the diameter of the specimen during exposure for each examination period, taking the diameter after the days conditioning as 100 % Change in diameter is given by: ∆D = [(D − D1 ) / D1 ]⋅100 (3) where: ∆D is the diameter change expressed in percentage; D2 is the diameter of the specimen after the exposure period, in millimetres; BS EN 12808-1:2008 EN 12808-1:2008 (E) D1 is the diameter of the specimen after the initial conditioning, in millimetres Determine the mean of three values or more A result showing a plus (+) sign shall indicate a gain in diameter and a minus (-) sign shall indicate a loss 9.3 Change of compressive strength value Calculate to the nearest 0,01 % the percentage decrease or increase of compressive strength of the specimen during exposure for each examination period, taking the compressive strength after the days conditioning period in standard conditions as 100 % Calculate the cross sectional area of the specimen on the diameter value as determined in 8.1 Change in compressive strength is given by: ∆S = [(S − S1 ) / S1 ] ⋅ 100 (4) where: ∆S is the change in compressive strength, in percentage; S1 is the load calculated per cross-sectional area of specimen after the conditioning period, in megapascal; S2 is the load calculated per cross-sectional area of specimen after the exposure period, in megapascal A result showing a plus (+) sign shall indicate a gain in compressive strength and a minus (-) sign shall indicate a loss 10 Test report The test report shall provide the following information: a) title, number and issue of this European Standard; b) place, date and time of sampling; c) type of grout or adhesive, commercial designation and manufacturer name; d) identification of test sample; e) handling and storage of samples before testing; f) exposure conditions to the chemical agent, frequency of change of chemical agent, temperature, etc.; g) date of test; h) colour and surface appearance of test units before testing; i) total duration of the test and the exposure periods, in days For each exposure period the following data is required: average percentage of diameter change of specimen; average percentage of mass change of specimen; appearance of specimen after immersion (surface cracks, loss of gloss, etching, pitting, softening, etc.); BS EN 12808-1:2008 EN 12808-1:2008 (E) appearance of the test chemical agent (discoloration, sediment, etc.); average percent change in the compressive strength of specimen; j) any other factor which could have influenced the result BS EN 12808-1:2008 BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the 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